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Figure 1: Structure of Prodigiosin 1 highlighting the A, B, and C pyrrole rings The biosynthesis of Prodigiosin [ 28 ] [ 29 ] involves the convergent coupling of three pyrrole type rings (labeled A, B, and C in figure 1) from L -proline, L -serine, L -methionine, pyruvate, and 2-octenal.
0.19 g/100 ml (20 °C) Soluble in hot water ... Since the pyrrolic ring is the most reactive portion of indole, electrophilic substitution of the carbocyclic (benzene ...
[1] [2] Simple aromatic rings can be heterocyclic if they contain non-carbon ring atoms, for example, oxygen, nitrogen, or sulfur. They can be monocyclic as in benzene, bicyclic as in naphthalene, or polycyclic as in anthracene. Simple monocyclic aromatic rings are usually five-membered rings like pyrrole or six-membered rings like pyridine.
β-Carbolines belong to the group of indole alkaloids and consist of a pyridine ring that is fused to an indole skeleton. [27] The structure of β-carboline is similar to that of tryptamine , with the ethylamine chain re-connected to the indole ring via an extra carbon atom, to produce a three-ringed structure.
It has a bicyclic structure, consisting of a six-membered benzene ring fused to a five-membered nitrogen-containing ring. The compound is based on the indole structure, but the 2-3 bond is saturated. By oxidation/dehydrogenation it can be converted to indole. [1] [2] Indoline can be produced from the reaction of indole, zinc and 85% phosphoric ...
Indole ethers at the benzene ring (1 C, 27 P) Indolecarboxamides (22 P) Indolocarbazoles (8 P) Indolones (1 P) Isotryptamines (8 P) M. Methylindoles (6 P) N ...
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The Fukuyama Indole synthesis can generate a range of different substituents at the 2,3 position that were previously unattainable without a protecting group on the nitrogen in the ring. One such example is the 2-iodoindole derivative, which can then lead to a variety of N-unprotected 2,3 substituted indoles.